Improvement in gas-regulators



I. REHN & C. S. FORD.

GAS-REGULATOR.

Patent-ed Jan. 25

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Specification forming part of Letters Patent No. 172,774, dated January 25, 1876; application filed December 15, 1875.

To all whomit may concern:

Be it known that we, ISAAC REHN and CHARLES S. FORD, of the city ofPhiladelphia, State of Pennsylvania, have invented an Improved Gas-Governor, of which the following is a specification:

Our invention is an automatic gas check or governor for the prevention of the extreme flow of gas through gas-burners at high gaspressure, and at the same time to permit the maximum flow through such burners when the gas is at minimum pressure, thereby to secure a practically even light under such variations, and so to construct the governor that it may be introduced into the ordinary burners in use when it is desired.

The drawings, Nos. 1, 3, and 4, are in sec tion, and on an enlarged scale, the more easily to set forth the parts, while No. 5 is an external view of the governor, natural size, combined with a burner.

Figure 1 represents a hollow metallic cylinder or case, L, with an open end, marked A. The opposite end has a flat shoulder or flange, as shown at X, which flat shoulder projects inward on the inside to the extent of about one-fourth of the diameter of the cylinder. From the inner edge of this flat shoulder there projects upward or outward a comically-shaped top, (3, about three-sixteenths of an inch high, the center of the upper end of which is provided with a small hole, D, and theside of this top is provided with a hole or slot of sufficient capacity to admit the free passage of a gas-supply at low pressuresay an eighth of an inch in diameter. This hole is marked E.

Fig. 2 represents the pin F and a disk, G. Fig. 3 is a face view of the disk Gr, showing a small hole, H, near the center, where the pin or piston is attached to the disk. This hole is quite small, having a capacity of about onesixteenth of an inch in diameter. The edge of this disk shows several notches, I.

Fig. 4 shows the device in action. shows the device, natural size.

We put the parts together in the following manner: We insert the pin and disk (the pin and disk having been previously attached) through the open end of the cylinder, the pin passing through the small hole in the opposite end of the cylinder. After allowing the Fig. 5

disk to reach a distance of about one-fourth the length of the parallel part of the cylinder the top of the pin is bent over so that the disk can never fall below this point, while it may rise to the top or in contact with the shoulder or flange X.

The action of the device is as follows When the gas presses against the under face of the diskthe position of which disk is horizontal when in the burner and on the fixtureit will pass through the small hole H, also through the notches I, and to some extent also over the outer edge of the disk, being the supply sufficient up to a pressure of from one and a half to two inches gaspressure, (water-gage,) which is the point at which the blowing and waste of an open burner commences. The disk and pin are made of such proper weight that at this point the disk is raised to contact with the flange X, which closes or covers the notches I and also the supply around the edges of the disk, leaving no opening for a gas-passage but that of the small hole H. This hole being placed near the center of the disk is beyond the reach of the shoulder or flange X, and opens directly into the conically-shaped top 0, and so furnishes the only supply at high gas pressures, and secures about the same supply to the burner at high pressure that is ati'orded at a low pressure when the disk is down and with more area of aperture. When the high pressure subsides the disk will, as a matter of course, drop to its original position.

- WVe make these cylinders of standard size that of the drill used before the burner is tappedso that they may he slid into such burners and put into general use, as shown in Fig. 5. i

The notches in the edge of the disk may be dispensed with if the disk is made correspondingly smaller; but the action is not so sure, owing to the lateral play thus afforded, and which is prevented by making the disk so as more nearly to fit the diameter of the cylinder. 7

We do not claim broadly the combination of a movable slotted valve and a case to which the valve is adapted as a regulator for gas; but

We claim-- ILA gas check or regulator, in which a flange or shoulder, X, is combined with a movable disk, G, having notches or openings, arranged to be closed by the said shoulder when the disk is raised, substantially as set forth.

2. The combination, in a gas-regulator, of Q the flange X and movable disk, having an opening, H, arranged as set forth.

3. The combination of a gas-burner and a case, L, containing a valve, G, and arranged within the usual chamber in the burner above the threaded socket, at the lower end thereof, as specified.

ISAAC REHN.

CHAS. S. FORD.

Witnesses:

JOHN H. CAHILL, JOHN Dn'LY. 

